Philips styroflex capacitors

[roibm]

Hi all,

Anyone that knows whether philips ever made styroflex capacitors?

These are 3300pf 63V +/-1% W4KS


and these 1500pf 63V +/-1% W4KS

are they fakes? 100 years old? any good?
I know they are Polystyrol not styroflex, and styroflex is trademark and bla bla...


thanks

[BrianL]

Yes, I do believe that Philips once made polystyrene caps

[roibm]

any idea about quality or how old they could be?

[Jan Dupont]

As I recall, Philips made such caps, and they where quite expencive at that time.....

[jean-paul]

Those are excellent Philips encapsulated polystyrene caps. 1% tolerance, 63V. Slight drawback is their non standard pin out.... They were expensive indeed ! I have a quantity of 442 pF and 21 nF of the same type and they are real good.

Age is at least 10 to 15 years but never mind, they don't age ( encapsulated = can't go wrong ).

[roibm]

These are great news, 20 @ 3EUR => 15ECent/piece which is ok I guess

[jean-paul]

Cheaper than MKT, good deal !!

[roibm]

one more question guys... please bear with me...
generally, the styroflex are good for... PSU? bypassing? bypassing coupling caps?

[Bernhard]

Those yellow KS are nonmagnetic, I have them too.

The blue KP are magnetic, those which are found in all kind of Philips Marantz players in the output filter stage.

Worth to change them ???

[Nickolas K.]

the styroflex are good for... PSU? bypassing? bypassing coupling caps?

For RIAA eq., don't waste them bypassing electrolytics.

Nick